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Network scalability and energy efficiency in wireless sensor networks should be supported by elaborate topology control. Clustering algorithms are useful topology management approach to reduce communication overhead and exploit data aggregation in wireless sensor networks. A clustering algorithm based on cell combination is presented in the paper for the networks where sensor nodes are distributed...
We consider the problem of prolonging the lifetime of ad hoc networks, using the OLSR routing protocol, in the presence of selfish nodes. This can be achieved by (1) reducing the number of relay nodes propagating the topology control messages and (2) considering the residual energy levels of these relay nodes. These objectives can be reached by deploying the clustering concept to OLSR. In this paper,...
In this paper, we present a novel algorithm of connected dominating set based clustering in sensor networks. Considering the characteristics and location information of nodes in sensor networks, a modified directed transfer model of sensor networks, and a novel clustering algorithm based on area is proposed in this paper. Theoretical analyses and simulation results show that, the above new methods...
As a new networking topology, Wireless Mesh Networks (WMNs) have advantageous properties in terms of robustness, range extension and density, but also have significant potential disadvantages, which determines some classical routing algorithms are not very suitable for WMNs. In this paper, we propose a novel routing algorithm based on the WMNs access scheme design to improve the networks performance...
Wireless sensor network are consist of hundreds or thousands of sensor nodes deployed in an area of interest for gathering information. Sensor nodes are harshly energy constrained therefore it is important to organize in a way to save the energy during processing, receiving and communication with base station. Sensor nodes are classified in different clusters. Efficient cluster head is selected in...
Clustering is an effective approach to hierarchically organizing network topology for efficient data aggregation in wireless sensor networks (WSNs). In this paper, we present a new approach to energy-efficient, distributed clustering in WSNs using the recent modeling and computational methodology of factor graphs and message-passings. We first formulate the sensor clustering as an optimization problem...
This paper proposes a secure and efficient clustering (SEC) model for wireless sensor networks with the topologies change via pre-distributed key and authentication approaches. This model also presents a hierarchical and on-demand cluster maintaining method in the clustered wireless sensor networks, guaranteeing that the network can identify and get rid of malicious nodes, achieve cluster-range self-management...
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